--- /dev/null
+.\" $NetBSD: statvfs.5,v 1.10 2008/06/23 04:22:36 dholland Exp $
+.\"
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+.\" @(#)statfs.2 8.5 (Berkeley) 5/24/95
+.\"
+.Dd June 23, 2008
+.Dt STATVFS 5
+.Os
+.Sh NAME
+.Nm statvfs
+.Nd file system statistics
+.Sh SYNOPSIS
+.In sys/types.h
+.In sys/statvfs.h
+.Sh DESCRIPTION
+The
+.Aq Pa sys/statvfs.h
+header defines the structures and functions that
+return information about a mounted file system.
+The
+.Nm statvfs
+structure is defined as follows:
+.Bd -literal
+
+struct statvfs {
+ unsigned long f_bsize; /* system block size */
+ unsigned long f_frsize; /* system fragment size */
+
+ fsblkcnt_t f_blocks; /* number of blocks in file system */
+ fsblkcnt_t f_bfree; /* free blocks avail in file system */
+ fsblkcnt_t f_bavail; /* free blocks avail to non-root */
+
+ fsfilcnt_t f_files; /* total file nodes in file system */
+ fsfilcnt_t f_ffree; /* free file nodes in file system */
+ fsfilcnt_t f_favail; /* free file nodes avail to non-root */
+
+ unsigned long f_fsid; /* File system ID */
+
+ unsigned long f_flag; /* flags */
+
+ unsigned long f_namemax;/* maximum filename length */
+};
+.Ed
+.Pp
+The
+.Fa f_flag
+argument can have the following bits set:
+.Bl -tag -width ST_SYNCHRONOUS
+.It Dv ST_RDONLY
+The filesystem is mounted read-only;
+Even the super-user may not write on it.
+.It Dv ST_NOSUID
+Setuid and setgid bits on files are not honored when they are executed.
+.El
+.Sh SEE ALSO
+.Xr statvfs 2
+.Sh HISTORY
+The
+.Aq Pa sys/statvfs.h
+header first appeared in
+.Nx 3.0 .